a human limb; technically the part of the superior limb between the shoulder and the elbow but commonly used to refer to the whole superior limb. arm, branch, limb (noun). any projection that is thought to resemble a human arm.
Vertebrates are the most organized organisms on Earth. They belong to the sub-phylum Vertebrata. They are not the most numerous group of animals, they are the most advanced group of animals.The characteristics that makes vertebrates special are the presence of the spinal cords, vertebrae and notochords.hey belong to the Phylum Chordata. The characteristics of phylum chordata is the presence of notochord, a dorsal hollow nerve cord and paired pharyngeal gill slits. The members of subphylum Vertebrata possess notochord during the embryonic period.
Vertebrates are animals with a backbone (examples: humans, snakes,  birds). They give birth alive and sometimes hatched    Invertebrates are animals without a backbone â¦ (examples: snails,  starfish, worms). Invertebrates have no bones at all that they can  move by using tentacles.ll mammals are vertebrates. All corals, insects, worms, jellyfish, snails and starfish are inverte â¦ brates because they have no backbone.